https://www.mangago.zone/read-manga/the_world_without_you/
i think this one fits your description!! the ml (which is the mc as soon as you start the story) has been seeing this boy with blonde hair in his dreams, ever since he was a child. He fell in love with this boy, and soon encounters a similar-looking guy in the real world.
i think this is such a masterpiece, there’s some angst but everything’s gonna get better after their communication
The plot of “the world without you”
omgg thank you!! I had this on my list for awhile but had no idea that's what the plot was about. This is exactly what I need
tysm, this is the kind of plot I've been craving today
Very very specific request - does anyone know if there's any BLs where they fall in love with someone in their dream but this person doesn't exist and never did exist?